The United Nations has held a crisis meeting of African and world leaders to discuss what can be done to contain West Africa's Ebola epidemic. The world's largest outbreak of the virus has caused at least 2800 deaths so far, mainly in Sierra Leone, Liberia, and Guinea. Sierra Leone's President has just widened a quarantine to include another one million people in an attempt to curb the disease's spread, but some on the ground say it's difficult to know whether the national lockdowns are helping, when treatment is so badly lacking. Journalist and photographer Ashley Hamer has been in Sierra Leone covering the crisis for two months.